| 1 | #ifndef _URCU_RCUJA_RANGE_H |
| 2 | #define _URCU_RCUJA_RANGE_H |
| 3 | |
| 4 | /* |
| 5 | * urcu/rcuja-range.h |
| 6 | * |
| 7 | * Userspace RCU library - RCU Judy Array Range Support |
| 8 | * |
| 9 | * Copyright 2012-2013 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 10 | * |
| 11 | * This library is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU Lesser General Public |
| 13 | * License as published by the Free Software Foundation; either |
| 14 | * version 2.1 of the License, or (at your option) any later version. |
| 15 | * |
| 16 | * This library is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | * Lesser General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU Lesser General Public |
| 22 | * License along with this library; if not, write to the Free Software |
| 23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 24 | * |
| 25 | * Include this file _after_ including your URCU flavor. |
| 26 | */ |
| 27 | |
| 28 | #include <urcu/rcuja.h> |
| 29 | #include <pthread.h> |
| 30 | #include <stdint.h> |
| 31 | |
| 32 | #ifdef __cplusplus |
| 33 | extern "C" { |
| 34 | #endif |
| 35 | |
| 36 | enum cds_ja_range_type { |
| 37 | CDS_JA_RANGE_ALLOCATED, |
| 38 | CDS_JA_RANGE_FREE, |
| 39 | CDS_JA_RANGE_REMOVED, |
| 40 | }; |
| 41 | |
| 42 | /* |
| 43 | * Range goes from start (inclusive) to end (inclusive). |
| 44 | * Range start is used as node key in the Judy array. |
| 45 | */ |
| 46 | struct cds_ja_range { |
| 47 | uint64_t start, end; |
| 48 | struct cds_ja_node ja_node; |
| 49 | pthread_mutex_t lock; |
| 50 | enum cds_ja_range_type type; |
| 51 | struct rcu_head head; |
| 52 | }; |
| 53 | |
| 54 | int cds_ja_range_init(struct cds_ja *ja); |
| 55 | int cds_ja_range_fini(struct cds_ja *ja); |
| 56 | |
| 57 | struct cds_ja_range *cds_ja_range_lookup(struct cds_ja *ja, uint64_t key); |
| 58 | |
| 59 | struct cds_ja_range *cds_ja_range_lock(struct cds_ja_range *range); |
| 60 | |
| 61 | void cds_ja_range_unlock(struct cds_ja_range *range); |
| 62 | |
| 63 | struct cds_ja_range *cds_ja_range_add(struct cds_ja *ja, |
| 64 | uint64_t start, /* inclusive */ |
| 65 | uint64_t end); /* inclusive */ |
| 66 | |
| 67 | int cds_ja_range_del(struct cds_ja *ja, struct cds_ja_range *range); |
| 68 | |
| 69 | #ifdef __cplusplus |
| 70 | } |
| 71 | #endif |
| 72 | |
| 73 | #endif /* _URCU_RCUJA_H */ |